If you didn't love them enough already, there's at least one species documented to live and hunt cooperatively in matriarchal family groups!
c0nc0rdanceVelvet worms shoot rapid-hardening glue at their prey (other invertebrates). Within seconds, the sprayed liquid hardens to plastic-like consistency, trapping or slowing the target. This marvelous glue has possible human applications in recyclable bioplastics & surgical sutures that dissolve.